Improvement in machines for shaping boot and shoe heel stiffeners



2 Sheets--Sheet 2. J K I M B A L L.

Improvement in Machines for Shaping Boot and Shoe Heel-Stieners.

Patented Oct. 8,1872.

Wil/n west //f UNITED STATES PATENT Omron.;

JOHN KIMBALL, OE BOSTON, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR` SHAPING BOOT AND SHOE HEEL STIFFENERS.

Specification forming part of Letters Patent No. 131,957,4 dated October 8,1872.

To all whom it may concern:

Be it known that I, JOHN KIMZBALL, of Boston, of the county of Suffolk and State of Massachusetts, have invented anew and useful Machine for Gondensing and Shaping Shoe or Boot Heel Stift'eners; and I do hereby declare the same to be fully described in the following specication and represented in the accompanying drawing, of which- Figure 1 is a top view; Fig. 2, a side elevation; and Fig. 3, a longitudinal section of the machine. Fig. 4 is a perspective view of a heelstiifener of the kind heretofore usually employed. Fig. 5 is a perspective view of it as it appears after having been treated by the said machine, which reduces it to form, or curves it both longitudinally and transversely so as to enable it to iit to the heel of a last.

In said drawing, A denotes a post having a concavity,'a, in its head-to receive a hammer, B, the face a of whose head b is correspondingly4 convex. The shank c of the hammer is pivoted at its end to a standard, C; and said shank should not be rigid, but should be an elastic bar, capable of being sprung laterally somewhat like a bow. Below the hammershank is a driving-shaft, D, provided With a iiy-wheel, d, a driving or fast pulley,'e, a loose pulley, f, and a cranked wheel, g, the shaft being supported by suitable standards h h or boxes fixed thereto. The crankpin t' of the wheel is conjoined with the hammershank by an extensible connecting-rod, E, composed of a coupling, k, and two rods, l m. One rod is pivoted to the shank and the other to the crank-pin, and there is a right screw on one rod and a left screw on the other, such being for the coupling to screw upon the rods, in order` that when the coupling is revolved in one direction it shall expand or lengthen the connecting-rod, and when turned the opposite way contract or shorten it. .Upon each screw is a set-nut, Z', to screw against the coupling so as to prevent it from being revolved accidentally or .out of time on the rods.

The object of the extensible connecting-rod is to accommodate the machine to Work stiffeners diiieringin thickness; and the object of having the hammer-shank elastic is to enable the hammer to accommodate itself to the varyin g thickness of any stift'ener, which is generally much thicker at its middle than at its edges.

On putting the driving-shaft in revolution a reciprocating movement will be imparted to the hammer-that is to say, it will be caused to beat successively upon the bed-"and, if a stiffener-blank be interposed between the two and moved longitudinally and laterally, as may be required, it may be condensed and beaten into shape with great advantage.

With this machine percussion and pressure of the hammer may be used to effect condensation of the stiiiener 5 for while the crank is passing its lower dead center it will operate to pull down the elastic hammer-shank, and, as a consequence, cause it to press down the hammer-head with force upon the leather, so as to aid in shaping it, or rendering it concavoconvex, the percussion-blows of the hammer serving to e'ect condensation of the leather.

I make no claim to a trip-hammer and its bed or anvil, such not having the elastic shank and the extensible connection-rod, or the concavity of the bed and convexity of the hammer-head, such as are incident to my machine.

I claim as my invention- The heel-stiit'ener machine, substantially as described and represented, and for the purpose specified, it consisting of the cranked shaft D, the extensible connecting-rod E, the elastic shank c, convex hammer-head b, and

the concavity a, all arranged, constructed, and

combined with the post A and standard C,

and provided with pulleys e f and a ily-wheel,

d, as set forth and shown.

' JOHN KIMBALL.

Witnesses:

R. H. EDDY, S. N. PIPER. 

